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Use the charts below to calculate horizontal and vertical unit expansion for various shelving types and components.

Unit Growth Chart

When designing a shelving layout, unit growth must be considered. To determine the overall dimension of a continuous row of shelving employing T-Posts or Angle Posts with tie plates refer to the table below.

SHELF SIZE 36” X 24” SHELF SIZE 36” X 24” SHELF SIZE 36” X 24” NOMINALSHELFDEPTH + 1/2” 24 - 1/2” 36 - 1/2” 36 - 1/2” 1/4” 1/4” 110” 36 - 1/2”

Unit Clear Width

The examples below are based on a 36" wide shelf.

USING STD.ANGLE POSTS CLEAROPENINGWIDTH 33 - 1/2” 1 - 1/2” 1 - 1/2” SHELF WIDTH + 1/2”MINUS 3” = CLEAR WIDTH 36 - 1/2” USING HVY.ANGLE POSTS CLEAROPENINGWIDTH 32 - 3/4” SHELF WIDTH + 1/2”MINUS 3 - 3/4” = CLEAR WIDTH 36 - 1/2” 1 - 7/8” 1 - 7/8” SHELF WIDTH + 5/8”MINUS 3 - 3/4” = CLEAR WIDTH 36 - 5/8” USING HVY.ANGLE & HVY. T-POSTS CLEAROPENINGWIDTH 32 - 7/8” 1 - 7/8” 1 - 7/8” SHELF WIDTH + 3/4”MINUS 3 - 3/4” = CLEAR WIDTH 36 - 3/4” USING HVY.T-POSTS CLEAROPENINGWIDTH 33” 1 - 7/8” 1 - 7/8”

Vertical Shelf Clearance for Single Rivet Units

This chart depicts shelf clearances for typical Rivetwell shelving units with 1-1/2" vertical shelf adjustment

5 SHELF 18 - 1/2” 18 - 3/8” 18 - 3/8” 19” 6 SHELF 12 - 1/2” 13 - 3/8” 15 - 3/8” 16” 15 - 3/8” 7 SHELF 11” 10 - 7/8” 12 - 3/8” 13” 12 - 3/8” 12 - 3/8” 8 SHELF 9 - 1/2” 9 - 3/8” 9 - 3/8” 11 - 1/2” 9 - 3/8” 10 - 7/8” 10 - 7/8” 84”

Vertical Shelf Clearance for Double Rivet units

Units with Standard Beams, Heavy Duty Beams, and Channel Beams

4 SHELF 23 - 5/8” 23 - 5/8” 23 - 5/8” 84” 5 SHELF 26 - 5/8” 23 - 5/8” 26 - 5/8” 26 - 5/8” 120”